The lack of response from companies required to register under the Government’s Carbon Reduction Commitment – Energy Efficiency Scheme (some estimates state only 20% of those qualifying have signed up) seems to underline the apathy of big users of electricity towards meeting their responsibilities.

Energy savings in buildings

The registration by companies using more than 600 Mwh per annum is intended as a first step to reducing energy consumption against an established benchmark. There are undoubtedly difficulties in identifying what specific actions need to be taken to effect savings which can be accurately measured. Few companies have in place sophisticated energy measuring devices which record the consumption by activity. For example, it is well known that heating, ventilating and air conditioning (HVAC) costs typically account for 70% of a building’s energy consumption. But just what element in this mix accounts for what proportion of consumption is rarely known and this can act as an excuse for not taking action.

Without detailed information on energy cost accounting it’s more difficult to decide what focussed actions to take to achieve clearly measurable savings. Maybe here lies a clue to the apparent apathy, but to do nothing will ultimately incur significant fines.

However, like changing to low energy light bulbs, there is plenty of proof to show that uncleaned dirty air conditioning systems can increase energy consumption by up to 60%. Removing dirt accumulations on Air Handling Units and coils, cleaning the fans, carrying out duct cleaning and introducing low energy air filters will achieve significant energy savings without incurring substantial costs.

So, without sophisticated measuring technology building owners and managers can make worthwhile energy savings in the costs of running buildings. Plus a cleaned air conditioning system will result in a healthier working environment. That should keep the number crunchers and the staff happy.

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• Duct Cleaning
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